diff --git a/src/agents/agent-scope.ts b/src/agents/agent-scope.ts
index 27363a51d..8f5704dc7 100644
--- a/src/agents/agent-scope.ts
+++ b/src/agents/agent-scope.ts
@@ -20,6 +20,7 @@ type ResolvedAgentConfig = {
   workspace?: string;
   agentDir?: string;
   model?: AgentEntry["model"];
+  thinkingDefault?: AgentEntry["thinkingDefault"];
   memorySearch?: AgentEntry["memorySearch"];
   humanDelay?: AgentEntry["humanDelay"];
   heartbeat?: AgentEntry["heartbeat"];
@@ -103,6 +104,7 @@ export function resolveAgentConfig(
       typeof entry.model === "string" || (entry.model && typeof entry.model === "object")
         ? entry.model
         : undefined,
+    thinkingDefault: entry.thinkingDefault,
     memorySearch: entry.memorySearch,
     humanDelay: entry.humanDelay,
     heartbeat: entry.heartbeat,
diff --git a/src/auto-reply/reply/get-reply-directives-apply.ts b/src/auto-reply/reply/get-reply-directives-apply.ts
index c55e90539..b35a4ccdb 100644
--- a/src/auto-reply/reply/get-reply-directives-apply.ts
+++ b/src/auto-reply/reply/get-reply-directives-apply.ts
@@ -39,6 +39,7 @@ export async function applyInlineDirectiveOverrides(params: {
   agentId: string;
   agentDir: string;
   agentCfg: AgentDefaults;
+  agentThinkingDefault?: ThinkLevel;
   sessionEntry: SessionEntry;
   sessionStore: Record<string, SessionEntry>;
   sessionKey: string;
@@ -74,6 +75,7 @@ export async function applyInlineDirectiveOverrides(params: {
     agentId,
     agentDir,
     agentCfg,
+    agentThinkingDefault,
     sessionEntry,
     sessionStore,
     sessionKey,
@@ -147,6 +149,7 @@ export async function applyInlineDirectiveOverrides(params: {
     }
     const resolvedDefaultThinkLevel =
       (sessionEntry?.thinkingLevel as ThinkLevel | undefined) ??
+      agentThinkingDefault ??
       (agentCfg?.thinkingDefault as ThinkLevel | undefined) ??
       (await modelState.resolveDefaultThinkingLevel());
     const currentThinkLevel = resolvedDefaultThinkLevel;
diff --git a/src/auto-reply/reply/get-reply-directives.ts b/src/auto-reply/reply/get-reply-directives.ts
index dfc586640..320b97619 100644
--- a/src/auto-reply/reply/get-reply-directives.ts
+++ b/src/auto-reply/reply/get-reply-directives.ts
@@ -88,6 +88,7 @@ export async function resolveReplyDirectives(params: {
   agentDir: string;
   workspaceDir: string;
   agentCfg: AgentDefaults;
+  agentThinkingDefault?: ThinkLevel;
   sessionCtx: TemplateContext;
   sessionEntry: SessionEntry;
   sessionStore: Record<string, SessionEntry>;
@@ -112,6 +113,7 @@ export async function resolveReplyDirectives(params: {
     cfg,
     agentId,
     agentCfg,
+    agentThinkingDefault,
     agentDir,
     workspaceDir,
     sessionCtx,
@@ -341,6 +343,7 @@ export async function resolveReplyDirectives(params: {
   const resolvedThinkLevel =
     (directives.thinkLevel as ThinkLevel | undefined) ??
     (sessionEntry?.thinkingLevel as ThinkLevel | undefined) ??
+    agentThinkingDefault ??
     (agentCfg?.thinkingDefault as ThinkLevel | undefined);
 
   const resolvedVerboseLevel =
@@ -411,6 +414,7 @@ export async function resolveReplyDirectives(params: {
     agentId,
     agentDir,
     agentCfg,
+    agentThinkingDefault,
     sessionEntry,
     sessionStore,
     sessionKey,
diff --git a/src/auto-reply/reply/get-reply.ts b/src/auto-reply/reply/get-reply.ts
index 67b0c308e..ea7a2a89a 100644
--- a/src/auto-reply/reply/get-reply.ts
+++ b/src/auto-reply/reply/get-reply.ts
@@ -1,4 +1,5 @@
 import {
+  resolveAgentConfig,
   resolveAgentDir,
   resolveAgentWorkspaceDir,
   resolveSessionAgentId,
@@ -10,6 +11,7 @@ import { type OpenClawConfig, loadConfig } from "../../config/config.js";
 import { defaultRuntime } from "../../runtime.js";
 import { resolveCommandAuthorization } from "../command-auth.js";
 import type { MsgContext } from "../templating.js";
+import type { ThinkLevel } from "../thinking.js";
 import { SILENT_REPLY_TOKEN } from "../tokens.js";
 import { applyMediaUnderstanding } from "../../media-understanding/apply.js";
 import { applyLinkUnderstanding } from "../../link-understanding/apply.js";
@@ -39,6 +41,8 @@ export async function getReplyFromConfig(
     config: cfg,
   });
   const agentCfg = cfg.agents?.defaults;
+  const perAgentConfig = resolveAgentConfig(cfg, agentId);
+  const agentThinkingDefault = perAgentConfig?.thinkingDefault as ThinkLevel | undefined;
   const sessionCfg = cfg.session;
   const { defaultProvider, defaultModel, aliasIndex } = resolveDefaultModel({
     cfg,
@@ -148,6 +152,7 @@ export async function getReplyFromConfig(
     agentDir,
     workspaceDir,
     agentCfg,
+    agentThinkingDefault,
     sessionCtx,
     sessionEntry,
     sessionStore,
diff --git a/src/config/types.agents.ts b/src/config/types.agents.ts
index f083c1897..47fffd10c 100644
--- a/src/config/types.agents.ts
+++ b/src/config/types.agents.ts
@@ -24,6 +24,8 @@ export type AgentConfig = {
   workspace?: string;
   agentDir?: string;
   model?: AgentModelConfig;
+  /** Per-agent default thinking level (overrides agents.defaults.thinkingDefault). */
+  thinkingDefault?: "off" | "minimal" | "low" | "medium" | "high" | "xhigh";
   memorySearch?: MemorySearchConfig;
   /** Human-like delay between block replies for this agent. */
   humanDelay?: HumanDelayConfig;
diff --git a/src/config/zod-schema.agent-runtime.ts b/src/config/zod-schema.agent-runtime.ts
index 7e95c3538..5e8429376 100644
--- a/src/config/zod-schema.agent-runtime.ts
+++ b/src/config/zod-schema.agent-runtime.ts
@@ -414,6 +414,17 @@ export const AgentModelSchema = z.union([
     })
     .strict(),
 ]);
+export const ThinkingDefaultSchema = z
+  .union([
+    z.literal("off"),
+    z.literal("minimal"),
+    z.literal("low"),
+    z.literal("medium"),
+    z.literal("high"),
+    z.literal("xhigh"),
+  ])
+  .optional();
+
 export const AgentEntrySchema = z
   .object({
     id: z.string(),
@@ -422,6 +433,7 @@ export const AgentEntrySchema = z
     workspace: z.string().optional(),
     agentDir: z.string().optional(),
     model: AgentModelSchema.optional(),
+    thinkingDefault: ThinkingDefaultSchema,
     memorySearch: MemorySearchSchema,
     humanDelay: HumanDelaySchema.optional(),
     heartbeat: HeartbeatSchema,